Westgarth, 27, played in 56 regular season games with the Kings last season, recording three points (all assists) and 105 penalty minutes (second on the team). He also played in all six Kings playoff games and registered two assists and 14 penalty minutes.

In 65 career NHL regular season games, all with the Kings, Westgarth has three assists and 114 penalty minutes.

Westgarth, a 6-4, 234-pound native of Amherstburg, Ontario, had one year remaining on his contract. The new extension runs through the 2013-14 season. The Princeton University product originally signed with the Kings as an unrestricted free agent in 2007.